Patent US4735184A successfully refreshed from Google Patents.
US4735184A
Expired / Lapsed
US
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Fuel control apparatus for internal combustion engine
Assignee: Nissan Motor Co Ltd
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Filing: 1987-06-03
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Granted: 1988-04-05
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Expires: 2007-06-03
Abstract
Abstract An apparatus for controlling an internal combustion engine having starter switch. The apparatus includes a control circuit for calculating a value corresponding to the amount of fuel supplied to the engine in time during which the engine is starting. The calculated value is modified in a direction decreasing the amount of fuel supplied to the engine when the interval between the time when the starter switch is turned on and the time when the engine stalls is equal to or less than a predetermined value and the interval between the time when the engine stalls and the time when the starter switch is turned on is equal to or less than a predetermined value.
Inventors
- 👤 Mitsuru Kasanami
- 👤 Hideyuki Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:00
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/06; F02D41/061
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
171 words
An apparatus for controlling an internal combustion engine having a starter switch changable from a first state to a second state for starting the engine, and means for controlling the amount of fuel supplied to the engine, comprising: means for calculating a value corresponding to a setting of the means for controlling the amount of fuel supplied to the engine in time during which the engine is starting; means for measuring a first time interval until the engine stalls after the starter switch changes to the first state; means for measuring a second time interval until the starter switch changes to the second state after the engine stalls; means for comparing the first and second time intervals with first and second predetermined values, respectively; and means for modifying the calculated value to decrease the amount of fuel supplied to the engine when the first time interval is equal to or less than the first predetermined value and the second time interval is equal to or less than the second predetermined value.
Claim 2
Independent Claim
171 words
An apparatus for controlling an internal combustion engine having a starter switch changable from a first state to a second state for starting the engine, and means for controlling the amount of fuel supplied to the engine, comprising: means for calculating a value corresponding to a setting of the means for controlling the amount of fuel supplied to the engine in time during which the engine is starting; means for measuring a first time interval until the engine stalls after the starter switch changes to the first state; means for measuring a second time interval until the starter switch changes to the second state after the engine stalls; means for comparing the first and second time intervals with first and second predetermined values, respectively; and means for modifying the calculated value to decrease the amount of fuel supplied to the engine when the first time interval is equal to or less than the first predetermined value and the second time interval is equal to or less than the second predetermined value.
Claim 3
Dependent Claim
25 words
The apparatus as claimed in claim 1, wherein the modifying means includes means for multiplying the calculated value by a predetermined value less than 1.
References Cited (Backward Citations)
JPS578327A
Cited
US4438748A
Cited
US4478194A
Cited
US4582036A
Cited
US4653452A
Cited
US4628886A
Cited
US4681079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |